1171120572 has 96 divisors (see below), whose sum is σ = 3158400000. Its totient is φ = 374818752.

The previous prime is 1171120549. The next prime is 1171120579. The reversal of 1171120572 is 2750211711.

1171120572 is a `hidden beast` number, since 1 + 1 + 71 + 1 + 20 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171120579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 622329 + ... + 624207.

It is an arithmetic number, because the mean of its divisors is an integer number (32900000).

Almost surely, 2^1171120572 is an apocalyptic number.

1171120572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1171120572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579200000).

1171120572 is an abundant number, since it is smaller than the sum of its proper divisors (1987279428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171120572 is a wasteful number, since it uses less digits than its factorization.

1171120572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The square root of 1171120572 is about 34221.6389438028. The cubic root of 1171120572 is about 1054.0645397818.

The spelling of 1171120572 in words is "one billion, one hundred seventy-one million, one hundred twenty thousand, five hundred seventy-two".